3D ultrasound coronal C-scan imaging for optic nerve sheath meningioma
- J P S Garcia , Jr1,4,
- P T Finger1,3,5,
- M Kurli1,5,
- R A Holliday1,2
- 1The New York Eye and Ear Infirmary, New York, USA
- 2Beth Israel Medical Center, New York, USA
- 3New York University School of Medicine, New York, USA
- 4New York Medical College, New York, USA
- 5The New York Eye Cancer Center, NY, USA
- Correspondence to: Paul T Finger The New York Eye Cancer Center,115 East 61st Street, New York City, NY 10021, USA; pfingereyecancer.com
- Accepted 25 July 2004
- optic nerve meningioma
- ultrasound
- computed tomography
- coronal scan
- three dimensional ultrasonography
The use of three dimensional (3D) ultrasonography (3DUS) for optic nerve measurements has been described in normal eyes utilising coronal “C-scans.”1,2 This study demonstrates the use of 3DUS generated C-scans for optic nerve measurements in orbits with optic nerve sheath meningioma and compares those with measurements obtained from computed tomography (CT) scans.
CASE REPORTS
A 69 year old woman with a left optic nerve sheath meningioma was treated with external beam radiation therapy 6 years earlier. On 3DUS coronal C-scans, an optic nerve sheath diameter (ONSD) 3 mm behind the globe was measured to be 7.4 mm in the left eye (fig 1, top left) and 6.4 mm in the right (fig 1, top right).
Case 1. The patient’s left (top left) and right (top right) optic nerve sheath diameters are shown …
